Ceph-ansible March 2021

ceph-ansible@ceph.io

2 participants
4 discussions

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by nishinegi11 negi

7 months, 2 weeks

OSD Nodes with Different Hardware

by Dave Hall

Hello, I have searched and found some references to how to set up an Inventory file to accommodate OSD nodes with different hardware configurations. I tried a few things with the INI form of the Inventory file, but I ended up using ansible-inventory to convert it to YAML. Still, it's not clear what's the correct way to differentiate between different subgroups of hosts. Example: I'm currently adding some new OSD nodes to a functioning cluster. Although both the old nodes and the new nodes have the same size and number of HDDs, they have different NVMe drives. Also, for some reasons the HDDs are enumerated starting from /dev/sdc on the old nodes, but from /dev/sda on the new. Also, the new nodes will have a different block_db_size. Is there a straightforward way, other than duplicating the devices and block_db_size values multiple times, to define specific settings once for specific groups of hosts? Thanks. -Dave -- Dave Hall Binghamton University

3 years, 1 month

Question about logging and debugging

by Dave Hall

Hello, This might be a more general Ansible question, but I will have other Ceph-Ansible questions, so I thought I'd start here. If this is a basic Ansible question, I'd be grateful for a link to a useful tutorial. Question: If I understand Ansible correctly, at the far end of it all ansible-playbook issues commands to hosts via SSH. I'm looking for how to have those commands dumped to a log file rather than actually issuing them to the target hosts, especially for commands that actually cause a change on the host. In other words, while the standard output during a Ceph ansible-playbook run is interesting and useful, there's a lot of intermediate information. OTOH, in the end a ceph-volume command is issued for an OSD node. I'd like to be able to look at it and see if it looks right. If not, I need to go back to my inventory file or my group-vars and make an adjustment or fix an error. Thanks. -Dave -- Dave Hall Binghamton University

3 years, 1 month

ceph-ansible(5.0-stable) mix ssd and hdd

by mrsugersweetman21＠gmail.com

ceph cluster with three node; os: ubuntu20.04 Each of three ceph nodes have four disks to be ceph osd; sdb 480g ssd sbc 4t hdd sde 4t hdd sdd 4t hdd wanna use ceph-ansible deploy ceph cluster ,connect to openstack; but have some issues in osds.yml. wanna openstack data -------direct access--------->ceph ssd------>ceph hdd; how to configuration osds.yml better ,thanks ? link: https://github.com/ceph/ceph-ansible/issues/2435 https://github.com/ceph/ceph-ansible/blob/master/group_vars/osds.yml.sample

3 years, 1 month

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Ceph-ansible March 2021